Engineering investigation is the assembly of drilling, well exploration, sounding and geophysical prospecting to find out the engineering geological conditions.
Engineering survey tools mainly include standard penetration device and soil sampler.

Standard and parameter performance of engineering survey tools
NO.	Standard	Name	Encoding
Soil sampler
1	2 inch	Soil sampler	QTQ-2 inch
2	3 inch	Soil sampler	QTQ-3 inch
3	SPT	Soil sampler	QTQ-SPT
standard penetration device
1	63.5	standard penetration device	BGQ-63.5

Technical exchange

Drilling formation

Bit Selection in Hard Rock Formation

Bit Selection in Soft Rock Formation

Engineering case

Shandong Wendeng-4000m Scientific Drilling Hole

Zila Mountain-super deep horizontal hole drilling

Development and Application Demonstration of 5000m Intelligent Geological Drilling Technology and Equipment

Pre

None

Pre

None

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